A lock-up is a period during which investors cannot withdraw their money from a fund.
What the video says
In hedge funds, there can be a stretch when you can't take your money out. It's called a lock-up. Say you invest with a one-year lock-up. For that year, no withdrawals. When it ends, you can ask for your money. Even then, the fund's terms set when you get paid. So why do investors care? Your money is only as liquid as the terms say. Getting in is easy. Getting out has a date.
In the glossary: Lock-up
A simple example with round numbers, not advice. Terms vary by fund.
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